1. The problem is to calculate the sum of 3528 and 4. 2. The formula for addition is $a + b = c$, where $a$ and $b$ are numbers to add, and $c$ is the result. 3. Substitute the values: $3528 + 4$. 4. Perform the addition: $3528 + 4 = 3532$. 5. Therefore, the answer is $3532$.